About the role

Onsite Diesel Pty Ltd is seeking an experienced Heavy Diesel Mechanic to join our team in Port Hedland, WA. This is a full-time position offering the opportunity to work with heavy-duty diesel vehicles and equipment in a dynamic, fast-paced automotive environment. You will be responsible for diagnosing, maintaining and repairing complex diesel engines and related systems, contributing to the reliability and performance of vehicles essential to our operations.

This role is based on-site at our Port Hedland facility, where you will work as part of a skilled technical team.

Key responsibilities

- Diagnose and repair heavy diesel engines, transmissions and related mechanical systems
- Perform routine maintenance, servicing and inspections on diesel-powered vehicles and equipment
- Conduct troubleshooting to identify mechanical faults and implement effective solutions
- Rebuild and recondition engine components and mechanical assemblies
- Use diagnostic equipment and testing tools to assess vehicle performance and identify defects
- Maintain accurate records of work completed, parts used and service histories
- Ensure all work is completed in compliance with safety standards and industry regulations
- Maintain a clean and safe workshop environment

About you

- A recognised qualification in diesel mechanics or heavy vehicle mechanical engineering
- Minimum of 3-5 years' experience working as a Heavy Diesel Mechanic in a commercial or industrial setting
- Comprehensive knowledge of diesel engine systems, air, hydraulics and transmission systems




- Proficiency in using mechanical diagnostic and testing equipment
- Strong problem-solving abilities and attention to detail
- Excellent time management and the ability to work efficiently within deadlines
- Valid driver's licence and willingness to undertake a driving assessment if required
- Current or willingness to obtain relevant safety certifications (e.g. forklift operation, confined space entry)
- Strong communication skills and the ability to work collaboratively as part of a team
- Experience with Mack & Kenworth trucks

Benefits

- Competitive salary and benefits package commensurate with experience
- Opportunities for ongoing skills development and industry training
- A supportive, team-oriented work environment with an experienced technical team
- Modern workshop facilities and access to quality diagnostic equipment
- Work-life balance with structured working hours
- Safe working practices and comprehensive occupational health and safety protocols

About us Onsite Diesel Pty Ltd is a leading provider of heavy vehicle maintenance and alignment services in Port Hedland. With a reputation built on quality workmanship, reliability and customer service, we specialise in keeping heavy diesel vehicles and equipment operating at peak performance. Our team comprises skilled technicians committed to delivering exceptional service to our commercial and industrial clients.

We pride ourselves on creating a professional, safety-focused workplace where technical expertise is valued and continuous improvement is encouraged.

📌 Heavy Diesel Mechanic (Port Hedland)
🏢 Onsite diesel
📍 Port Hedland